/Engine/Plugins/Runtime/RigVM/Source/RigVMDeveloper/Public/EdGraph/RigVMEdGraphSchema.h
Returns all of the applicable pin types for variables within a rigvm host
virtual void GetVariablePinTypes ( [TArray](API\Runtime\Core\Containers\TArray)< [FEdGraphPinType](API\Runtime\Engine\EdGraph\FEdGraphPinType) > & PinTypes ) const